International Civil Aviation Organization (ICAO)

ICAO Predecessor Conferences (other than ICAN) International Civil Aviation Organization (ICAO) ICAO was founded in 1947, and has been headquartered in Montreal, Canada since that time. The governing body of ICAO is its Assembly, which meets every 1-3 years. A Provisional Organization (PICAO) functioned starting in 1945. An International Commission on Air Navigation (ICAN), under the League of Nations, was a predecessor organization, operating mainly in Europe. Other Predecessor inter-governmental conferences will be listed. P1910/1 International Conference on Aerial Navigation, Paris, France, 18 May-29 Jun. 1910 P1916/1 1st Conference of Pan-American Aeronautics, Santiago, Chile, 9 Mar. 1916 P1917/1 1st Pan-American Aeronautical Convention & Exhibition, New York, NY, USA, 8-15 Feb. 1917 P1919/1 2nd Pan-American Aeronautical Convention & Exhibition, Atlantic City, NJ, USA, 1 May-1 Jun. 1919 P1920/1 3rd Pan-American Aeronautical Convention, Atlantic City, NJ, USA, 20-30 May 1920 P1925/1 1st International Conference on Private Air Law, Paris, France, 1925 P1926/1 Ibero-American Conference, Madrid, Spain, Oct. 1926, Created Madrid Convention on Air Navigation P1927/1 Inter-American Commission on Commercial Aviation, Washington, DC, USA, 2-19 May 1927 _ P1928/1 6th Pan-American Conference, Havana, Cuba, 16 Jan.-20 Feb. 1928 P1929/1 2nd International Conference on Private Air Law, Warsaw, Poland, 4-12 Oct. 1929 P1933/2 3rd International Conference on Private Air Law, Rome, Italy, 15-29 May 1933 P1937/1 Inter-American Technical Conference on Aviation, Lima, Peru, 15-25 Sep. 1937 Peru issued Sc. # C45-48 on 15 Sep. 1937 Cuba issued Sc. #284-93 on 2 Jan. 1928 Created Havana Convention on Air Navigation _ P1928/2 International Civil Aeronautics Conference, Washington, DC, USA, 12-14 Dec. 1928 C1. Orange. Red-orange C2. Violet C1. used as cancel on philatelic covers. US issued Sc. #649-50 on 12 Dec. 1928 M1. Green, Observed 12-14 Dec. 1928 Philatelic cover, $25 C3. Violet DM1. Red-Orange, Violet CC1. 241x115 Penalty Envelope Philatelic cover, $12; Philatelic cover on CC1., $100 United Nations Philatelists Monograph, 2011-2013 REV. 2 April 2018 H1.

ICAO Predecessor Conferences (other than ICAN), continued P1938/1 4th International Conference on Private Air Law, Brussels, Belgium, 19-30 Sep. 1938 ICAN Sessions, continued C23. 23rd, Brussels, Belgium, 27 May-1 Jun. 1935 Rectangular Hand Cancel For Session H1. Obs. 27 May-1 Jun. 1935 Session was held at the Universal Exposition in Brussels. ICAO Predecessor-ICAN The International Commission on Air Navigation (ICAN) was located in Paris, France from 1922 to 1946, when ICAO took over the office. In the period before the Convention adopted at the Paris Peace Conference was ratified, from 1920 to 1922, 11 Conferences were held in preparation. Initially called British-French-Belgian Conferences, then International Aeronautic Conferences. These were held in Paris, London, and Brussels. ICAN Sessions C1. 1st, Paris, 11-18 Jul. 1922 C2. 2nd, London, 25-27 Oct. 1922 C3. 3rd, Brussels, 28 Feb. - 2 Mar. 1923 C4. 4th, London, 26-30 Jun. 1923 C5. 5th, Rome, 26-31 Oct. 1923 C6. 6th, Paris, 3-6 Mar. 1924 C7. 7th, Paris, 10-14 Oct. 1924 C8. 8th, London, 3-6 Apr. 1925 C9. 9th, Brussels, Oct. 1925 C10. 10th, Paris, May 1926 C11. 11th, Paris, Nov. 1926 C12. 12th, London, Apr. 1927 C13. 13th, Rome, Oct. 1927 C14. 14th, Geneva, Jun. 1928 C15. 15th, Brussels, Mar. 1929 C16. 16th (Extraordinary), Paris, Jun. 1929 C17. 17th, Paris, Dec. 1929 C18. 18th, Anvers, Belgium, Jun. 1930 Hand Cancel & Registry Label used at Exposition, which was held From 27 Apr.-6 Nov. 1935. Philatelic cover with H1., $150 C24. 24th, Warsaw, Poland, May 1936 C25. 25th, Paris, Jun. 1937 C26. 26th, The Hague, Netherlands, May-Jun. 1938 C27. 27th, Copenhagen, Denmark, June. 1939 C28. 28th, London, Aug. 1945 C29. 29th, Dublin, Ireland, 28-30 Oct. 1946 Founding of ICAO F1. International Civil Aviation Conference, Chicago, IL, USA, 1 Nov.-7 Dec. 1944 Hand cancel, Registry label & Machine cancel from Anvers International Exposition, where Session was held. Exposition was held 3 May -3 Nov. 1930 C19. 19th, London, Jun. 1931 C20. 20th, Paris, May 1932 C21. 21st, Rome, May 1933 C22. 22nd, Lisbon, Portugal, May 1934 Post Card of Stevens Hotel, site of Conference A new Convention on International Civil Aviation was written, which established ICAO upon ratification. Provisional ICAO The Chicago Convention was ratified on 6 Jun. 1945, making PICAO possible. A Canadian Preparatory Committee was appointed and met 18 times from late Jun. to 15 Aug. 1945 to make plans. Meetings were held in Montreal, Ottawa, and Washington, DC. 1st Session of Interim Council was held 15 Aug. 1945 at the Windsor Hotel, Montreal Canada H2. REV. 29 May 2017 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

PICAO Conferences PICAO Conferences 1946/1 1st Session, Facilitation Division, Montreal, Canada, 24 Jan-2 Feb. 1946 1946/2 North Atlantic Regional Air Navigation Meeting, Dublin, Ireland, 4-27 Mar. 1946 1946/3 European-Mediterranean Regional Air Navigation Meeting, Paris France, 24 Apr.-15 May 1946 1946/6 Middle East Regional Air Navigation Meeting, Cairo, Egypt, 1-18 Oct. 1946 Egypt issued Sc.# C38, on 1 Oct. 1946 H1. Obs. 24 Apr.-14 May 1946 Registry label used with H1. Philatelic cover, $10; Registry label, add $5 1946/4 PICAO Interim Assembly, Montreal, Canada, 21 May-7 Jul. 1946 Air Conference, Montreal, Canada, 6-8 Jun. 1946 H1. Obs. 1-16 Oct. 1946 E1. Imprint M1. Publicity, Obs. 23 May-6 Jun. 1946 This conference, held during the Interim Assembly, was not an official PICAO meeting. It was called by the Montreal Board of Trade, and had representatives from PICAO, IATA, and the Air Industry. Commercial cover, $6 1946/5 Caribbean Regional Air Navigation Meeting, Washington, DC, 26 Aug.-3 Sep. 1946 Registered Souvenir Cover, 1 Oct. 1946 Philatelic cover, $10; Registry Imprint, add $10 1947/1 South Pacific Regional Air Navigation Meeting, Melbourne, Australia, 4-22 Feb. 1947 H1. Obs. 3-5 Feb. 1947 E1. Violet Imprint C1. C2. CC1. On Front, lower left, 228x102 Philatelic cover, $20; with CC1., add $60; Registry label, add $20 United Nations Philatelists Monograph, 2011-2013 REV. 2 Apr. 2018 H3.

ICAO Assemblies A.1 A.10 10th, Caracas, Venezuela, 19 Jun.-16 Jul. 1956, continued 1st, Montreal, Canada, 6-27 May 1947 CC1. 236x102 Airmail CC2. 235x102 Airmail (POR AVION in upper right) & 235x102 Airmail (PAR AVION VIA AIR MAIL CORREO AEREO across bottom) Philatelic cover with Hand-painted cachet, 6 May 1947 Philatelic cover, $25 A.2 2nd, Geneva, Switzerland, 1-21 Jun. 1948 Registered Service cover with CC1., 28 May 1956 Philatelic cover with Hand-painted cachet, 6 May 1948 Philatelic cover, $25 A.3 3rd, Montreal, 7-20 Jun. 1949 A.4 4th, Montreal, 30 May-20 Jun. 1950 A.5 5th, Montreal, 5-18 Jun. 1951 A.6 6th, Montreal, 27 May-12 Jun. 1952 A.7 7th, Brighton, England, 16 Jun.-6 Jul. 1953 A.8 8th, Montreal, 1-14 Jun. 1954 A.9 9th, Montreal, 31 May-13 Jun. 1955 A.10 10th, Caracas, Venezuela, 19 Jun.-16 Jul. 1956 Service cover with CC2., & C1., 6 Jul. 1956 Registered Service cover with CC2. & C1., 17 Sep. 1956 Service cover, $60 C1. Violet, Assembly Preparatory Commission Direccion Prepartoria H4. Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

A.15 ICAO Assemblies, continued 15th, Montreal, 22 Jun.-19 Jul. 1965 A.11 11th, Montreal, 20 May-2 Jun. 1958 A.12 12th, San Diego, CA, USA, 16 Jun.-9 Jul. 1959 M1. Publicity, Obs. 3-19 Jul. 1965 Commercial cover, $5 A.16 16th, Buenos Aires, Argentina, 3-28 Sep. 1968 M1. Publicity, Cancels 1,2 & 4, Obs. 11 Jun.-10 Jul. 1959 H1. Obs. 3-7 Sep. 1968 CC1. On back flap, 146x114 Airmail & 240x104 Airmail Philatelic cover, $8; Philatelic cover on Conference CC, $15 Philatelic cover, Machine 4, 10 Jul 1959 Philatelic cover, $4 A.13 13th, Montreal, 19-21 Jun. 1961 A.14 14th, Rome, Italy, 21 Aug.-15 Sep. 1962 H1. Obs. 21 Aug. 1962 Philatelic cover, 21 Aug. 1962 Philatelic cover, $3 United Nations Philatelists Monograph, 2011-2013 REV. 12 Dec. 2012 H5.

ICAO Assemblies, continued A.17 17th, Montreal, 16-30 Jun. 1970 A.18 18th, Vienna, Austria, 15 Jun.-7 Jul. 1971 A.26 26th, Montreal, 23 Sep.-10 Oct. 1986 A.27 27th, Montreal, 19 Sep.-6 Oct. 1989 A.28 28th (Extraordinary), Montreal, 22-26 Oct. 1990 H1. Obs. #1-10, 15 Jun.-8 Jul. 1971 H1. Obs. 22-26 Oct. 1990 E1. Sonderpostamt CC1. On Back flap, 238x104 Airmail Service cover from Netherlands Delegate, 28 Jun. 1971 Three Special covers issued for Assembly (ICAO Montreal CC on back) Philatelic cover, $8; Registry label, add $20; Service cover, $25 A.19 19th, United Nations, NY, USA, 11-12 Mar. 1972 A.20 20th, Rome, Italy, 28 Aug.-21 Sep. 1973 A.21 21st, Montreal, 24 Sep.-16 Oct. 1974 A.22 22nd, Montreal, 13 Sep.-5 Oct. 1977 A.23 23rd, Montreal, 16 Sep.-7 Oct. 1980 A.24 24th, Montrea1, 20 Sep.-10 Oct. 1983 A.25 25th (Extraordinary), Montreal, 24 Apr.-10 May 1984 Special cover, $20 H6. REV. 21 Jun, 2017 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

ICAO Assemblies, continued A.29 A.30 30th (Extraordinary), Montreal, 25-26 May 1993 29th, Montreal, 22 Sep.-8 Oct. 1992 H1. Obs. 25-26 May 1993 H1. Black, Red, Obs. 22 Sep.-8 Oct. 1992 Special cover issued for Assembly Special cover, $8 A.31 31st, 19 Sep.-4 Oct. 1995 H1. Obs. 19 Sep.-4 Oct. 1995 Three Special covers issued for Assembly (ICAO Montreal CC on back) Special cover, $10 Special cover issued for Assembly Special cover, $8 United Nations Philatelists Monograph, 2011-2013 H7.

ICAO Assemblies, continued A.32 32nd, 22 Sep.-2 Oct. 1998 A.34 34th (Extraordinary), Montreal, 31 Mar.-1 Apr. 2003 A.35 35th, Montreal, 28 Sep.-8 Oct. 2003 A.36 36th, Montreal, 18-28 Sep. 2007 H1. Obs. 22 Sep. 1998 H1. Obs. 18-28 Sep. 2007 Special cover issued for Assembly Special cover, $8 A.33 33rd, Montreal, 25 Sep.-5 Oct. 2001 Special cover issued for Assembly A.37 37th, Montreal, 28 Sep.-8 Oct. 2010 H1. Obs. 25 Sep.-6 Oct. 2001 H1. Obs. 28 Sep.-8 Oct. 2010 Special cover, $8 Special cover issued for Assembly Special cover issued for Assembly H8. Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

ICAO Assemblies, continued A.38 38th, Montreal, 24 Sep.-4 Oct. 2013 H1. Obs. 24 Sep.-3 Oct. 2013 Special cover issued for Assembly United Nations Philatelists Monograph, 2011-2013 REV. 24 Oct. 2013 H9.

1949/1 1st African-Indian Ocean Regional Air Navigation Meeting, London, England, 22 Mar.-12 Apr. 1949 Note: 1947/1 is listed under PICAO Conferences. 1950/1 2nd Caribbean Regional Air Navigation Meeting, Havana, Cuba, 11 Apr.-3 May 1950 1947/2 South American Regional Air Navigation Meeting, Lima, Peru, 17 Jun.-7 Jul. 1947 1950/2 2nd Middle East Air Navigation Meeting, Istanbul, Turkey, 1947/3 South American Regional Air Navigation Meeting, Rio de 17 Oct.-7 Nov. 1950 Janeiro, Brazil, 15-31 Jul. 1947 1948/1 European-Mediterranean Regional Air Navigation Meeting, 4-14 May 1948 1948/2 2nd Session, Facilitation Division, Geneva, Switzerland, 17 May-1 Jun. 1948 1948/3 North Atlantic Regional Air Navigation Meeting, Paris, France, 18-31 May 1948 1948/4 North Pacific Regional Air Navigation Meeting, Seattle, WA, USA, 13-29 Jul. 1948 1948/5 Southeast Asia Regional Air Navigation Meeting, New Delhi, India, 23 Nov.-14 Dec. 1948 Turkey issued Sc.# 1034-36, on 17 Oct. 1950 Other ICAO Conferences H1. Obs. 18 Nov. 1948 E1. ICAO New Delhi ICAO SEA RAN??? NEW DELHI H1. Obs. 17-19 Oct. 1950 C1. DM1. Violet CC1. 175x102 Airmail & 238x108 Airmail CC2. 238x108 Airmail Service cover to ICAO-Montreal, 18 Nov. 1948 Service cover, $60; Registry label, add $25 Registered Philatelic cover with CC1., 17 Oct. 1950 Philatelic cover, $20; Philatelic cover on Conference CC, $40; Service cover, $60 H10. Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

Other ICAO Conferences, continued 1951/1 South American & South Atlantic Regional Air Navigation Meeting, Buenos Aires, Argentina, 30 Oct-19 Nov. 1951 1952/1 Diplomatic Conference on Private Air Law, Rome, Italy, 9 Sep.-6 Oct. 1952, continued M1. Obs. 2-19 Nov. 1951 Conference pin given to delegates M1. on piece, $12; Philatelic cover. $25 1951/2 3rd Session, Facilitation of International Air Transport Division, Buenos Aires, Argentina, 21 Nov.-7 Dec. 1951 Special cover for Rome Convention, 7 Oct. 1952 Special cover, $40 1953/1 Combined Southeast Asia & Limited South Pacific Regional Air Navigation Meeting, Melbourne, Australia, 13 Jan.-9 Feb. 1953 M1. Obs. 30 Nov. 1951 H1. Obs. 22 Jan. 1953 H2. Obs. 13 Jan-4 Feb. 1953 M1. on piece, $12 1952/1 Diplomatic Conference on Private Air Law, Rome, Italy, 9 Sep.-6 Oct. 1952 E1. Green imprint C1. Violet Italy issued Sc.# 611 on 29 Sep. 1952 Philatelic cover with H1.,$40; Philatelic cover with H2., $20; Registry label, add $30 1953/2 1st Air Navigation Conference, Montreal, 24 Feb.-24 Mar. 1953 1953/3 2nd African & Indian Ocean Regional Air Navigation Conference, Santa Cruz de Tenerife, Spain, 17 Nov.-12 Dec. 1953 FAO Cancel used on Mail C1. Philatelic cover, $4 H1. Obs. 17 Nov.-15 Dec. 1953 United Nations Philatelists Monograph, 2011-2013 H11.

1955/3 4th Session, Facilitation of Air Transport Division, Manila, Philippines, 1-24 Oct. 1955 & 1st Pacific Regional Air Navigation Meeting, Manila, Philippines, 27 Oct.-26 Nov. 1955 Other ICAO Conferences 1954/1 Conference on Coordination of Air Transport in Europe, Strasbourg, France, 21 Apr.-10 May 1954 H1. Obs. 5-27 Oct. 1955 M1. Obs. 3-10 May 1954 Philatelic cover, $100 1954/2 Middle East Special Communications Meeting, Rhodes, Greece, 11-31 May 1954 C1. Violet Philatelic cover, $6 1955/4 1st Session, European Civil Aviation Conference, Strasbourg, France, 29 Nov.-16 Dec. 1955 1956/1 3rd Caribbean Regional Air Navigation Meeting, Ciudad Trujillo. Dominican Republic, 3-24 Apr. 1956 Dominican Republic issued Sc. # 469-70 & C95, 6 Apr. 1956 C2. Violet First Day Cover, 6 Apr. 1956 1956/2 3rd Air Navigation Conference, Montreal, Hand Cancel used with C1. & C2 18 Sep.-23 Oct. 1956 1957/1 2nd Session, European Civil Aviation Conference, Madrid, Philatelic cover with C1. or C2., $75 Spain, 24 Apr.-11 May 1957 1954/3 3rd North Atlantic Regional Air Navigation Meeting, 1957/2 11th Session, ICAO Legal Committee, Tokyo, Japan, Montreal, 5-29 Oct. 1954 12-25 Sep. 1957 1955/1 2nd Air Navigation Conference, Montreal, 30 Aug.-21 Sep. 1955 1955/2 International Conference on Air Law, The Hague, Netherlands, 6-28 Sep. 1955 H1. Red, Obs. 12-18 Sep. 1957 Philatelic cover, $25 H12. REV. 18 Jan. 2015 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

1959/1 Middle East & Southeast Asia Regional Air Navigation Meeting, Rome, Italy, 7 Jan.-3 Feb. 1959 1957/3 2nd South American and South Atlantic Air Navigation Meeting, Sao Paulo, Brazil, 22 Oct. 16 Nov. 1957 1959/2 3rd Session, European Civil Aviation Conference, Strasbourg, France, 9-20 Mar. 1959 1958/1 4th European-Mediterranean Regional Air Navigation Meeting, Geneva, Switzerland, 28 Jan.-21 Feb. 1958 Other ICAO Conferences, continued C1. Blue H1. Obs. 28 Jan.-22 Feb. 1958 Office Temporaire C1. Black, Red Used with H1. C2. CONF. 2, Used with Nations Unies - Geneve hand cancel Hand Cancel & Registry Label used with C1. Philatelic cover, $6; Registry label, add $6 1959/3 5th Session, Facilitation Division, Rome, Italy, 1-17 Dec. 1959 1960/1 3rd African Regional Air Navigation Meeting, Rome, Italy, 26 Jan.-19 Feb. 1960 1961/1 4th Session, European Civil Aviation Conference, Strasbourg, France, 4-20 Jul. 1961 Service cover to ICAO-Montreal, 17 Feb. 1958 C1. Blue, Used with Strasbourg Conseil d Europe Cancels Registry labels used Service cover to ICAO-Montreal, 17 Feb. 1958 Service cover, $40 United Nations Philatelists Monograph, 2011-2013 REV. 18 Jan. 2015 Philatelic cover, $6; Registry label, add $3 1961/2 International Conference on Private Air Law, Guadalajara, Mexico, 29 Aug.-18 Sep. 1961 1961/3 4th North Atlantic Regional Air Navigation Meeting, Paris, France, 14 Sep.-16 Oct. 1961 1962/1 2nd Pacific Regional Air Navigation Meeting, Vancouver, Canada, 25 Sep.-16 Oct. 1962 1963/1 6th Session, Facilitation Division, Mexico City, Mexico, 19 Mar.-3 Apr. 1963 1963/2 International Conference on Air Law, Tokyo, Japan, 20 Aug.-14 Sep. 1963 1963/3 Diplomatic Conference on Offenses Committed on Board Aircraft, Tokyo, Japan, 20 Aug.-16 Sep. 1963 H13.

Other ICAO Conferences 1964/1 5th European Civil Aviation Conference, Strasbourg, France, 6-21 Jul. 1964 C1. Black, Blue, Used with Strasbourg Conseil d Europe Cancels 1966/2 5th Caribbean Regional Air Navigation Meeting, Mexico City, Mexico, 22 Nov.-17 Dec. 1966 1967/1 6th Session, European Civil Aviation Conference, Strasbourg, France, 14 Nov.-15 Dec. 1967 1967/2 5th Air Navigation Conference, Montreal, 15 Nov.-22 Dec. 1967 1968/1 7th Session, Facilitation Division, Montreal, 14-30 May 1968 1968/2 International Conference on the Authentic Trilingual Text of the Convention of International Civil Aviation, Buenos Aires, Argentina, 9-24 Sep. 1968 1968/3 2nd Middle East/Southeast Asia Regional Air Navigation Meeting, Manila, Philippines, 19 Nov.-13 Dec. 1968 C2. Red, Used with Strasbourg Conseil d Europe Cancel C3. Black, Violet, Used with Strasbourg Conseil d Europe Cancel Registry label used Philatelic cover, $6; Registry label, add $3 1964/2 4th African & Indian Ocean Air Navigation Meeting, Paris, France, 23 Nov.-18 Dec. 1964 1965/1 4th Air Navigation Conference, Montreal, 9 Nov.-3 Dec. 1965 1966/1 5th European-Mediterranean Regional Air Navigation Meeting, Geneva, Switzerland, 1-26 Feb. 1966 H1. Obs. 19-27 Nov. 1968 Philatelic cover, $10; Service cover, $30 1969/1 6th Air Navigation Conference, Montreal, 9 Apr.-3 May 1969 1970/1 5th North Atlantic Regional Air Navigation Meeting, Montreal, 1-25 Apr. 1970 1970/2 Diplomatic Conference on the Unlawful Seizure of Aircraft, The Hague, Netherlands, 1-16 Dec. 1970 1971/1 Conference on Revision of the Warsaw Convention, Guatemala City, Guatemala, 9 Feb.-8 Mar. 1971 C1. CONF. 12 H1. Obs. 9 Feb.-8 Mar. 1971 Philatelic cover, $12 1971/2 Diplomatic Conference on the Unlawful Interference with Aircraft, Montreal, 8-23 Sep. 1971 1971/3 6th European-Mediterranean Regional Air Navigation Meeting, Geneva, Switzerland, 2-27 Nov. 1971 1972/1 7th Air Navigation Conference, Montreal, 5-19 Apr. 1972 1973/1 5th African/Indian Ocean Regional Air Navigation Meeting, Rome, Italy, 10 Jan.-2 Feb. 1973 Service cover, $40 Service cover to ICAO-Montreal, 7 Feb. 1966 (ICAO-Montreal CC on back flap) H14. REV. 2 Apr. 2018 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

Other ICAO Conferences, continued 1973/2 8th Session, ICAO Facilitation of Transport Division, Dubrovnik, Yugoslavia, 6-23 Mar. 1973 1985/1 3rd Air Transport Conference, Montreal, 22 Oct.-7 Nov. 1985 1985/1 7th European/Mediterranean Regional Air Navigation Meeting, Malaga, Spain, 12-23 Nov. 1985 H1. Obs. 6 Mar. 1973 H1. Obs. 12-23 Nov. 1985 Philatelic cover, $6 1988/1 International Conference on Air Law, Montreal, 9-24 Feb. 1988 1988/2 10th Session, Facilitation Division, Montreal, 7-23 Sep. 1988 Special cover for Conference, 6 Mar. 1973 1973/3 International Conference on Air Law, Rome, Italy, 29 Aug.-21 Sep. 1973 1973/4 Asia/Pacific Regional Air Navigation Meeting, Honolulu, HI, USA, 5-28 Sep. 1973 1974/1 8th Air Navigation Conference, Montreal, 17 Apr.-11 May 1974 1975/1 International Conference on Private Air Law, Montreal, 3-25 Sep. 1975 1976/1 9th Air Navigation Conference, Montreal, 21 Apr.-14 May 1976 1976/2 Caribbean/Latin American Regional Air Navigation Meeting, Lima, Peru, 5-28 Oct. 1976 1977/1 1st Air Transport Conference, Montreal, 13-26 Apr. 1977 1977/2 International Conference on the Authentic Russian Text of the Convention on International Civil Aviation, Montreal, 19-30 Sep. 1977 1978/1 International Conference on Air Law, Montreal, 6-23 Sep. 1978 1979/1 9th Session, Facilitation Division, Montreal, 18 Apr.-4 May 1979 1979/2 6th African/Indian Ocean Regional Air Navigation Meeting, Arusha, Tanzania, 20 Nov.-13 Dec. 1979 1980/1 2nd Air Transport Conference, Montreal, 12-28 Feb. 1980 United Nations Philatelists Monograph, 2011-2013 REV. 20 Dec. 2011 H15.

Other ICAO Conferences 43rd FICSA Council, Montreal, 5-10 Feb. 1990 1991/2 10th Air Navigation Conference, Montreal, 5-20 Sep. 1991 H1. Obs. 5-10 Feb. 1990 Special cover issued for Meeting FICSA (Federation of International Civil Servants Associations) is not part of ICAO or the UN. 1991/1 International Conference on Air Law, Montreal, 12 Feb.-1 Mar. 1991 Two Special covers issued for Conference. No special Cancel was used. each 1992/1 ICAO World-wide Air Transport Colloquium, Montreal, 6-10 Apr. 1992 C1. Used to cancel stamps on Special cover Two Special covers issued for Conference. No special Cancel was used. each each Two Special covers issued for Colloquium H16. REV. 12 Jun. 2012 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

Other ICAO Conferences, continued 1994/1 4th Air Transport Conference, Montreal, 23 Nov.-6 Dec. 1994 1997/1 Directors General of Civil Aviation Conference on a Global Strategy for Safety Oversight, Montreal, 10-12 Nov. 1997 C1. H1. Obs. 10 Nov. 1997 First Day Cover, 16 Sep. 1994, with C1. applied Philatelic cover with C1., $6 1995/1 11th Session, Facilitation Division, Montreal, 18-28 Apr. 1995 Mailed Special cover issued for Conference Unmailed ; Mailed Special cover, $10 1998/1 International Conference on the Authentic Chinese Text of the Convention on International Civil Aviation, Montreal, 28 Sep.-1 Oct. 1998 1999/1 International Conference on Air Law, Montreal, 10-28 May 1999 H1. Obs. 18-28 Apr. 1995 H1. Obs. 10 May 1999 Special cover issued for Session 1995/2 International Conference on the Authentic Arabic Text of the Convention on International Civil Aviation, Montreal, 25-29 Sep.1995 Mailed Special cover issued for Conference Unmailed ; Mailed Special cover, $10 United Nations Philatelists Monograph, 2011-2013 REV. 20 Dec. 2011 H17.

Other ICAO Conferences 2000/1 Conference on the Economics of Airports & Air Navigation Services, Montreal, 19-28 Jun. 2000 2006/1 Director General of Civil Aviation Conference on a Global Strategy for Aviation Safety, Montreal, 20-22 Mar. 2006 H1. Obs. 20-22 Mar. 2006 H1. Obs. 19-28 Jun. 2000 Special cover issued for Conference 2001/1 Diplomatic Conference to Adopt a Mobile Equipment Convention & an Aircraft Protocol under the joint auspices of ICAO & UNIDROIT, Cape Town, South Africa, 29 Oct.-16 Nov. 2001 2003/1 5th World-Wide Air Transport Conference, Montreal, 24-28 Mar. 2003 2003/2 11th Air Navigation Conference, Montreal, 22 Sep.-3 Oct. 2003 2004/1 12th Session, Facilitation Division, Cairo, Egypt, 22 Mae.-1 Apr. 2004 Special cover issued for Conference 2008/1 Conference on the Economics of Airports & Air Navigation Services, Montreal, 15-20 Sep. 2008 H1. Obs. 15-20 Sep. 2008 Special cover issued for Conference H18. REV. 20 Dec. 2011 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors

Other ICAO Conferences, continued 2009/1 Diplomatic Conference on Compensation for Damage Caused by Aircraft to Third Parties Arising from Acts of Unlawful Interference or from General Risks, Montreal, 20 Apr.-2 May 2009 2011/1 Global Runway Safety Symposium, Montreal, 24-26 May 2011 H1. Observed 24-26 May 2011 H1., Observed 20 Apr.-2 May 2009 PC1. Special Post Card Issued for Conference Special cover issued for Symposium 2012/1 12th Air Navigation Conference, Montreal, 19-30 Nov. 2012 H1. Obs. 19-30 Nov. 2012 Special Post Card with H1., $6 2010/1 Diplomatic Conference on Aviation Security, Beijing, China, 30 Aug.-10 Sep. 2010 Special Cover issued for Conference United Nations Philatelists Monograph, 2011-2013 REV. 17 Jan. 2013 H19.

Other ICAO Conferences, continued 2013/1 6th Worldwide Air Transport Conference, Montreal, 18-22 Mar. 2013 Personalized stamps prepared for Conference H1. Obs. 18-22 Mar. 2013 Special cover issued for Conference H20. REV. 15 Apr. 2013 Postal History of Conferences & Meetings of the United Nations, its Agencies & its Predecessors